module.exports = function(value, h) {

	if (typeof value!=='string') return '';

	let derivedHeadingTooltip = '';

	if (!this.opts.headingsTooltips.hasOwnProperty(value))
		return derivedHeadingTooltip;

	if (typeof this.opts.headingsTooltips[value]==='function') {
		if (h)
			return this.opts.headingsTooltips[value].call(this.$parent, h);

		return derivedHeadingTooltip;

	}

	return this.opts.headingsTooltips[value];
}
